maybe he mentions president obama's penchant for playing golf when the economy is souring. >> reporter: the president is prepping in nevada where he's said to be working on shorter answers and staying calm no matter what criticisms are leveled against him. >> basically they're keeping me indoors all the time. it's a drag. they're making me do my homework. >> reporter: joe biden and paul ryan don't debate until next week. so they're on the trail representing their campaigns this tuesday, biden in north carolina and ryan in iowa of jennifer davis, fox news. >> you can watch that first presidential debate on fox 5 at 9:00 tomorrow night live from denver. >>> a scare in the air for american airlines. passengers had a row of seats come loose in midflight. now the airline figured out why. will thomas is everywhere at 11:00. >> american airlines is responding. it says the clasps that hold the seats in place were installed improperly on several planes. so the seats came loose while the planes were up in the air. no one was hurt, but some flights had to be diverted for safety reasons. american